A unique identification key for a bank account.

Note that the old bank account number format is being phased out and will be replaced by the IBAN bank account number format. For information about the formats, see "Structure" below.

When you enter your own bank account numbers (in your house bank details), or your customers‘ or vendors‘ account numbers (in their master records), proceed as follows.

To enter any bank account number in the old format, split the number into three parts and enter them in the Bank Key, Bank Account, and Reference Details fields respectively. For example, to enter a customer’s bank account number 12345678-12345678-1234-12345-123-1234 in its master record, enter it as follows:

Alternatively, to enter the bank number in the IBAN format, choose , and enter it in the dialog box that appears.

In the old format, bank account numbers in Poland can be either 18 or 34 digits long. The bank account number consists of several components which are separated by a hyphen (-), for example 12401994-1042956-2700-00001. The first part of the account number is the bank number (in the example, 1042956).

In the IBAN format, bank account numbers start with PL (for Poland), followed by a two-digit check digit, the eight-digit bank number, and the 16-digit bank account number.